<!DOCTYPE html>
<html lang="en">
<head>
    <title>Bootstrap Example</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="bootstrap.min.css">
    <script src="jquery.min.js"></script>
    <script src="bootstrap.min.js"></script>
</head>
<body>
    <div class="container">
        <h2>Alerts</h2>
        <div class="alert alert-success">
            <strong>Success!</strong> Indicates a successful or positive action.
        </div>
        <div class="alert alert-info">
            <strong>Info!</strong> Indicates a neutral informative change or action.
        </div>
        <div class="alert alert-warning">
            <strong>Warning!</strong> Indicates a warning that might need attention.
        </div>
        <div class="alert alert-danger">
            <strong>Danger!</strong> Indicates a dangerous or potentially negative action.
        </div>

        <h2>Closing Alerts</h2>
        <!-- To help improve accessibility for people using screen readers, you should include the aria-label="close" attribute, when creating a close button.
        &times; (×) is an HTML entity that is the preferred icon for close buttons, rather than the letter "x". -->
        <div class="alert alert-success">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Success!</strong> Indicates a successful or positive action.
        </div>
        <div class="alert alert-info">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Info!</strong> Indicates a neutral informative change or action.
        </div>
        <div class="alert alert-warning">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Warning!</strong> Indicates a warning that might need attention.
        </div>
        <div class="alert alert-danger">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Danger!</strong> Indicates a dangerous or potentially negative action.
        </div>

        <h2>Animated Alerts</h2>
        <div class="alert alert-success fade in">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Success!</strong> Indicates a successful or positive action.
        </div>
        <div class="alert alert-info fade in">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Info!</strong> Indicates a neutral informative change or action.
        </div>
        <div class="alert alert-warning fade in">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Warning!</strong> Indicates a warning that might need attention.
        </div>
        <div class="alert alert-danger fade in">
            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
            <strong>Danger!</strong> Indicates a dangerous or potentially negative action.
        </div>
    </div>
</body>
</html>
